为给您2018考研英语复习助力，新东方在线为大家整理了一些考研英语的长难句资料参考，英语的复习像盖楼应该从基础开始复习，希望大家平时抽出一点时间读一读记一记。
Today, professors routinely treat the progressive interpretation of history and progressive public policy as the proper subject of study while portraying conservative or classical liberal ideas--such as free markets and self-reliance--as falling outside the boundaries of routine, and sometimes legitimate, intellectual investigation.
长难句解析：
Professors routinely treat A as B (认为A是B)
while 但是
Professors portray C as D (认为C是D)
A= the progressive interpretation of history and progressive public policy
B= the proper subject of study
C= the proper subject of study while portraying conservative or classical liberal ideas--such as free markets and self-reliance—
D= falling outside the boundaries of routine intellectual investigation,
and sometimes falling outside the boundaries of legitimate intellectual investigation.
参考译文：今天的教授们通常会把对于历史的进步的解读已经渐进的公共政策作为恰当的研究对象;而认为保守的或者是经典的自由主义，比如自由市场或者自我的依赖，是在常规的知识探究范畴之外东西，有时甚至认为其是在正当的知识探究范畴外的东西。